#pragma once
#include <cstddef>

#define MAX_BLOCK_SIZE 512
#define MAX_MEMORY_BLOCK 128
#define MAX_DGRAM_LEN 2048
#define MAX_DGRAM 32
#define DGRAM_HEAD 6
#define USER_INFO_PATH "user database.txt"
#define MAX_USER 16384

typedef std::size_t userid_t;